Expansion of 1/((1-2x)(1-5x)(1-9x)).

Terms

a(0) =1a(1) =16a(2) =183a(3) =1850a(4) =17681a(5) =164316a(6) =1504843a(7) =13673710a(8) =123714261a(9) =1116683216a(10) =10066424303a(11) =90679197570a(12) =816519676441